It's essentially the same dish as Senegal's mafé under a different name, and across the river in The Gambia domoda is often called the national dish.
Meat or fish simmers slowly in a thick, ground-peanut sauce with tomato, onion and whatever vegetables are on hand, then gets ladled over rice. It's a staple of the Casamance-Gambia borderlands, where Mandinka communities on both sides of the river share the recipe.